JPS60175555A - Ore polishing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a grinding machine for friction cleaning various granular solid materials, specifically sand and gravel for aggregates, catalysts for chemical reactions, plating materials, etc. In particular, the present invention relates to a device for friction cleaning granular materials having a high specific gravity.

[Prior art]

Generally, sand for use as aggregate for civil engineering and construction is required to have good cleaning properties, with impurities such as organic matter on the surface of the sand removed and washed.

Furthermore, since the desired effect cannot be obtained unless the surface of the reaction catalyst is clean, it is necessary to use one that has been thoroughly cleaned. Furthermore, inorganic chemical industrial raw materials such as plating materials or organic chemical raw materials are subjected to treatments such as cleaning, surface polishing, and surface peeling prior to their processing steps.

Among these granular materials, for example, sand for aggregate,
A sand washer has been proposed in which a pressurized water injection nozzle is installed in a rotary classifier, and the sand is sprayed or sprayed with pressurized water for rinsing after classification. Although it is possible to remove stubborn substances, there is a problem in that it is almost impossible to remove substances that are firmly attached to the sand. Such impurities must be removed by rubbing the sand surface with a hard material.

In addition, when cleaning plating materials, for example, they are placed in a cleaning tank equipped with stirring blades and cleaned in batches, but this method has drawbacks such as insufficient cleaning effects despite the large amount of power consumed for stirring. there were.

A patent application filed in 1983 was developed to overcome the drawbacks of conventional devices and to obtain granular materials with extremely good cleanliness.
In the specification of No. 7013, a rotating body is arranged in a vertical container,
While rotating this rotating body, the center line of the container is revolved, and the granular material supplied to the annular gap between the inner surface of the container and the outer peripheral surface of the rotating body is compressed between the rotating body and the container. A grinding machine is disclosed that peels off and removes substances attached to the surface of granular materials by rubbing the granular materials against each other.

However, in such an ore grinding machine, a supply section for granular material, that is, the ore to be ground, is arranged in the upper part of the container,
Since the structure is such that the particles move from the top to the bottom and are discharged, the rotating shaft provided at the center of the rotating body (the center of the If the rotary shaft (corresponding to shaft 3) is extended above the container and this rotating shaft is placed above the container, the structure around the supply part of the polished ore material will become complicated due to the provision of a drive operation mechanism such as a motor. Not only is the material supply operation and equipment maintenance/inspection work troublesome, but there are also other problems such as the rotational axis becoming easy to move.

[Purpose of the invention]

Therefore, an object of the present invention is to solve the above-mentioned problems in the grinding machine described in the above specification and to provide an apparatus having better performance.

[Structure of the invention]

That is, the grinding machine of the present invention has a supply section for the ground ore material in the upper part of the vertical container, and a discharge part for the ground ore material in the lower part, so that the ground ore material is directed from the top to the bottom. A rotary body is disposed within the container to form an annular gap between the inner surface of the container and an outer peripheral surface of the rotary body, and a rotating shaft provided on the rotary body is connected to a drive operation mechanism. The grinding machine is configured such that it can revolve around the center line of the container while rotating by rotating the machine, and has a grinding part formed between the supply part and the discharge part, wherein the rotating body The rotary shaft as a drive shaft provided in the grinding part is rotated from a position below the grinding part.

〔Example〕

Next, an embodiment of the present invention aimed at cleaning earth and sand will be described based on FIG. A mold hopper 1 forms a supply section for the polished ore material, and an ore polishing machine main body 2 is connected directly below the hopper 1.

This polishing machine main body 2 has a storage section 2 which is an inverted conical container.
', an inverted cone-shaped rotating body 4 disposed in the storage section 2', a rotating shaft (described later) for causing the rotating body 4 to revolve while rotating on its axis, and a drive for rotating this rotating shaft. It is configured to include an operating mechanism 3 and the like. The drive operation mechanism 6 includes a motor (not shown), a pulley 20, a drive shaft 21, a bevel gear 23, and the like.

A cone body 5 made of metal or hard synthetic resin is attached to the inner surface of the storage portion 2', and a rubber liner 6 is lined on the inner surface of the cone body 5, and the outer circumference of the rotating body 4 is lined with a liner 6 made of rubber. An annular gap or grinding portion 16 is formed in the surface, also made of rubber.

A pulp 15 made of a material with excellent wear resistance and having a generally triangular cross section and an annular shape as a whole is disposed facing the lower end of the grinding part 13 so as to narrow the flow path at the lower end. In addition to elastic materials such as rubber, it is also effective to use a material with a large coefficient of friction as the liner 6.12.

The rotation axis for rotating and rotating the rotating body 4 is
It consists of a lower rotating shaft 8 provided at the center line position of the storage section 2', and an upper rotating shaft 7 disposed eccentrically and directly connected to the lower rotating shaft 8. 8 is located at the center line position of the rotating body 4. Therefore, the rotating body 4 is eccentric with respect to the lower rotating shaft 8.

Thus, a bevel gear 22 is provided at the longitudinally intermediate portion of the lower rotating shaft 8, and this is a bevel gear 23 provided at the tip of a drive shaft 21 that is indirectly rotated by a motor (not shown).
By meshing with each other, the lower rotating shaft 8 and the upper rotating shaft 7 can rotate together.

In the figure, 9 is an upper bearing body, 10 is a holding member, 11 is an inverted cone, 14 is a discharge part for ground slag material, 17 is a lower bearing body whose upper part is formed into a conical shape, 18 is a seal cover, 1
9 is a cover plate, and 16 is a metal annular protection cylinder, the lower end of which is located in the immediate vicinity of the lower bearing body 17. Although not shown in detail in the figure, between the upper rotating shaft 7 and the upper bearing body 9,
A tapered roller bearing is provided between the lower rotating shaft 8 and the lower bearing body 17, respectively. Note that a structure in which the motor is directly connected to the lower rotating shaft 8 may also be used.

The rotating body 4 is fixed to the upper bearing body 9, and therefore, when the rotating body 4 is fixed by some external force, the rotating shaft (upper rotating shaft 7) rotates idly and at the same time. The rotating body 4 revolves around the center line of the storage section 2', that is, around the lower rotating shaft 8. Note that the lower bearing body 17 is fixed to the housing portion 2' via a member not shown.

Next, another embodiment of the present invention is shown in FIGS. 2 and 3.
straight. The iu lower female casing 62 of the mermu 813 + Suji Honno (-su 1) is connected, and the rotating body 36 is disposed within this casing 52.

A casing pedestal 34 is connected below the casing 32, and a cylindrical body 35 made of a wear-resistant material is disposed inside the casing pedestal. The shape and structure of the rotating body 36 and the rotating shaft for rotating and revolving it are basically the same as in the example shown in FIG. 1, but the lower part of the upper bearing body 67 surrounding the upper rotating shaft 36 is It surrounds the upper part of the lower bearing body 39 that surrounds the lower rotating shaft 38 .

A bearing inner ring 40, a metal 41, a seal cover 42, and an oil seal 43' are arranged around the lower bearing body 39, and the lower part of the upper bearing body 67 and the seal cover 42 are disposed around the lower bearing body 39.
A cylindrical body 43 made of a stretchable or flexible material such as rubber is provided across the gap 44 between the upper bearing body 37 and the lower bearing body 39 (this gap is defined by the upper tapered roller bearing 45 and A lower tapered roller bearing 46) is sealed against a discharge part 47 of the grinding slag side.

Further, a pulp 49 having a rectangular cross section and an annular shape as a whole is provided through the cylindrical body 35 facing the lower end of the grinding part 48 formed by the annular gap between the casing 32 and the rotating body 33. The bolt 49 can be moved up and down along the longitudinal direction of the bolt 50, so that the size of the flow path at the lower end of the polished ore can be finely adjusted as in the example shown in FIG.

In FIGS. 1 and 2, 61 is a holding plate, 62 is a rotating body main body, 63 is a bearing holder, 64 is a bearing nut and gun metal, 6
5 is a bearing holder, 66 is a bearing nut and washer, 67 is a hole bearing, 68 is an oil seal, 69 is a seal cover, 70 is a bearing inner ring, 71 is a key, 72 is a V pulley,
73 is a bearing nut and washer, 74 and 75 are lips, 76
is a receiving plate, 77 is a pedestal, 81.82 and 83 are bolts and nuts, 84.85.86 and 87 are hexagon socket head bolts, 9
1 is a motor, 92 is a V pulley, 96 is a V belt, 94
95 is a safety cover, 95 is a stand, and 96 is a grinding machine main body.

Now, to explain the operation of the apparatus shown in FIG. 1, when the motor is started and the drive shaft 21 is rotated, the upper rotating shaft 7 and the lower rotating shaft 8 rotate as one unit. In this case, since the upper rotating shaft 7 is eccentric to the lower rotating shaft 8 located at the center line of the storage section 2', the upper rotating shaft 7 revolves around the center line of the storage section 2' while rotating. I will do it. At this time, since there is some frictional force between the rotating body 4 and the upper rotating shaft 7, the former rotates in the same direction as the latter with some slip. It goes without saying that if the rotating body 4 is fixed with some force, the rotating body 4 will only revolve.

Next, if the belt conveyor 90 is supplied with soil while the drive shaft 21 is rotated, and the washing water is simultaneously supplied with a water sprinkler (not shown) installed above the hopper 1, the belt conveyor 90 can be supplied with washing water by its own weight. It flows into the polished ore section 13.

When earth and sand flow into the grinding section 13, a frictional force is generated between the earth and sand and the rotating body 4, so the rotating body 4 tries to stop rotating, but the upper rotating shaft 7 is forced to rotate. , the rotating body 4 rotates in the opposite direction to the upper rotating shaft 7.

Therefore, for example, when the upper rotating shaft 7 is rotating clockwise, the rotating body 4 rotates counterclockwise and revolves clockwise. It should be noted that it is clear from the above description that this axis of revolution describes a cylindrical body.

Due to the above-described movement of the rotating body 4, the earth and sand in the annular gap, that is, the grinding part 13, is successively pressed and compressed by the rotating body 4 toward the inner surface of the liner 6 of the storage part 2'. Because the body 4 is rotating, it does not stop without applying a mere pinching force, and a handling action occurs on the earth and sand, causing the earth and sand to knead and slide against each other.
Therefore, the earth and sand are rubbed against each other and crushed, and the substances that adhere to the periphery of the particles to be peeled off are peeled off, angular particles are rounded, and weak granules are ground up, allowing for proper crushing or grinding. It is possible to do this.

The ground sand is discharged from the lower end of the grinding section 13 to the discharge section 1.
4 and is finally received in a washed sand storage tank (not shown).

In this embodiment, the volume of the grinding part 13, or more precisely, the volume of the part of the annular gap where the grinding action is actually occurring, gradually decreases as it goes downward, and the storage part 2',
Since the contact surface of the rotary body 4 with earth and sand is formed of a liner with a large friction coefficient, the rotational movement of the rotary body 4, and therefore the grinding action, become more precise. Furthermore, since the flow path of the earth and sand is bent through the pulp 15, the earth and sand supplied to the hopper 1 will not pass through the discharge part 14, and since the protection tube 16 is provided, the earth and sand supplied to the hopper 1 will not be allowed to descend. This has the effect that there is no risk of dirt entering between the upper bearing body 9 and the lower bearing body 17 and damaging the tapered roller bearing.

Next, to explain the function and effect of the device in the example shown in Fig. 2, the grinding action is basically the same as the example shown in Fig. 1, but since the inner surface of the casing 32 is a vertical surface, the grinding part 48 of the earth and sand is
This has the advantage of increasing the pushing force against the cylindrical body 4.
Since 6 is provided, the tapered roller bearing 45 is used as in the example in FIG.
．． 46 from the intrusion of earth and sand. In this example, since the cylindrical body 43 is disposed across the upper and lower bearing bodies, the above-mentioned belly-keeping effect is ideal.

-IP 7-Jihefu AχL 1 Iii Yusui 7k 5 The reason why I used ↓ to check the ± of L is as follows. In other words, during grinding, the lower bearing body 3
9 is fixed, whereas the upper bearing main body 67 rotates and revolves as described above, so a part of the cylindrical body 46 is extended in its longitudinal direction, and the upper bearing body 67 is On the other hand, in a portion opposite to the above-mentioned portion, a force that tends to shrink the cylindrical body 46 acts sequentially on the entire cylindrical body 43 as the rotary body 4 rotates. Specifically, two cross sections of the cylindrical body 43 are shown in FIG. 2, and compared with the cylindrical body before being attached to the grinding machine,
The portion shown in the cross section on the right side and the vicinity thereof is elongated, and the portion shown in the cross section on the left side and the vicinity thereof is reduced in size. Note that the cylindrical body 43, the metal 41, and the seal cover 42 move integrally with the upper bearing body 37.

In the present invention, it is preferable that the top of the rotary body be conical, which eliminates the problem of part of the polished ore material remaining in the hopper. It is also effective to bend the vertical cross-sectional shape of the grinding part into a shape of a ``character'' to increase the grinding action, and it is also effective to make the outer circumferential surface of the rotary body and/or the inner surface of the casing 32 uneven.

Furthermore, when crushing earth and sand, the pressure may be increased by mixing media as described above (mixing 30 to 70 volumes), or
As in the example, it is possible to mix a liquid to give fluidity and process it in the form of slurry, but only the material to be treated (
(including dry method) is also possible. As the liquid, water, washing water, viscous liquid, and other liquids containing polishing agents or media can be used.

It is also possible to recycle the washed and separated media and liquid.

The grinding machine of the present invention can be applied to an extremely wide variety of granular materials, and the shape, size, and specific gravity (t#) are not particularly limited depending on whether they are organic or inorganic materials, and fine grain materials can be processed. It is effective for items with uneven surfaces, items that cannot be washed sufficiently with normal washing with water or solvents, and items as small as sand. Even if the material has the property of being hard (low density), it can be cleaned effectively by dry processing and then cleaning with liquid.

〔Effect of the invention〕

As described above, according to the present invention, various granular materials can be efficiently rubbed or crushed to be cleaned with a simple structure and energy saving, and maintenance and management are also simple and especially easy. - Since the upper part is almost completely open, it is possible to carry out the feeding operation of the polished ore material and the maintenance and inspection work of the equipment extremely efficiently, and many other effects can be obtained.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of the present invention, FIG. 2 and FIG.
The figures show another embodiment; FIG. 2 is a longitudinal sectional view of the isthmus;
The figure is a partial vertical sectional view showing the relationship between the grinding machine main body and the drive operation mechanism. DESCRIPTION OF SYMBOLS 1... Hopper, 2... Grinding machine main body, 2'... Storage part, 3... Drive operation mechanism, 4... Rotating body, 6...
... Liner, 7... Upper rotating shaft, 8... Lower rotating shaft, 9... Upper bearing body, 12... Liner, 13...
- Grinding part, 14... Discharge part, 15... Valve, 16
...Protection tube, 17...Lower bearing body, 31...Hopper, 62...Casing, 33...Rotating body,
65... Cylindrical body, 36... Upper rotating shaft, 37...
Upper bearing body, 38... Lower rotating shaft, 39... Lower bearing body, 43... Cylindrical body, 47... Discharge part, 48
... Grinding section, 49... Valve. Patent applicant: Teru Hase, Mido Kajisawa, Toyoshiro, patent attorney, Masayuki Takagi

Claims (1)

[Claims] 1. In a vertical container having a supply section for ground ore material in the upper part and a discharge part for the ground ore material in the lower part, a rotating shaft of the center line of the container is rotated and In a grinding machine, a grinding section is formed by disposing a rotating body capable of rotating on its own axis so as to be able to rotate while maintaining an annular gap between the outer peripheral surface of the rotating body and the inner surface of the container. A grinding machine characterized by having a drive operation mechanism arranged to rotate from a position below the mining section. 2. The grinding machine according to claim 1, wherein the rotating body rotates so that its center line describes a cylindrical body. 3. The rotary body has a lower rotary shaft in its center that is rotated by the drive operation mechanism, -L+-, +n
Word r charm 1 r cabinet 1 tears, +', Sai LJ-r X6 d>
The grinding machine according to claim 1 or 2, wherein the upper rotating shaft is arranged via a bearing. 4. The container and the rotary body are arranged such that the annular gap formed between them gradually decreases from the grinding part to the discharge part of the grinding sludge material. A grinding machine according to any one of the ranges 1 to 3. 5. The grinding machine according to claim 4, wherein the container has a cylindrical inner surface forming the grinding part, and the rotating body has a conical shape. 64. The grinding machine according to any one of claims 1 to 5, wherein the discharge part of the ground sludge material is provided with a gap adjustment member facing the lower end of the annular gap. . 1. The grinding machine according to claim 6, wherein the gap adjusting member is annular and its mounting position can be adjusted in the vertical direction. & The grinding machine according to any one of claims 1 to 7, wherein the inner surface of the container and the outer circumferential surface of the rotary body in the grinding part are formed of rough surfaces. 9. The grinding machine according to any one of claims 1 to 7, wherein the inner surface of the container and the outer peripheral surface of the rotary body in the grinding part are made of an elastic material.